May have found my transmission problem? |
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May have found my transmission problem? |
914bub |
Oct 11 2017, 12:01 AM
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#1
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Member Group: Members Posts: 433 Joined: 16-August 13 From: Modesto CA. Member No.: 16,260 Region Association: None |
I have had a shifting problem since I got my 914 almost 4 years ago. When I got the car the clutch was toast so I replaced all the clutch related parts, including the flywheel. Once I got the car driving I realized it wouldn't go into first gear. I speculated that first gear had gone out and the previous owner had driven starting out in second, finishing off the clutch. The car had been parked since 1990 and the PO is deceased so it was just a guess.
The ball bushing at the base of the shifter was destroyed so I ordered a shifter bushing kit and replaced that bushing as well as,(if I remember correctly) the two ball bushings at the firewall.The car would grind and grind but wouldn't go into first gear. After reading a bunch of threads here I decided to pull the nose cone and replaced first gear and syncho with a marginally better set of parts out of a side-shifted core trans I have here. Success! So I thought........ First gear worked well for about a week and a half, then back to the same old game. I found it hard to believe I installed parts that literally had a couple weeks of life left in them. I pulled the pedal assembly out about a year ago and then got busy playing with motorcycles. I finally got it back together and in this week.( I rebuilt it not because I thought it would solve my first gear problem but it just needed it).After getting everything together I was looking at the linkage trying to see anything awry and I found this: I apologize for the washed out picture but you should be able to see what I'm talking about. The bushing the shift rod goes through has NO play although it is old. The shift rod slides freely through it as well. I loosened the bracket and pryed it so the shift rod was more centered in the linkage coming out of the transmission but it seems like it could go a little higher up and be a little "happier". Sorry I didn't take an after picture, I can tomorrow. My biggest question is should the end of the shift rod be as "hourglass" shaped as it is or is that all attributable to wear? I can drop the shift rod for a better picture, or if someone has a picture of a "good" one I can compare to? If it is worn our machinist at work can build it up if needed so I can shape it correctly. I need to put the gas tank back in so I can drive it and see if it's better. Any advice would be greatly appreciated. I apologize for the long post. The rest of the gears engage fine, I think the shifter adjustment is ok. |
Dr Evil |
Oct 20 2017, 01:02 PM
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#2
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Send me your transmission! Group: Members Posts: 22,995 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Just to be thorough, ground strap in place? If not the cable becomes the ground and erodes/stretches until it breaks.
However, your question about shifter adjustment makes me think that there may be your issue. Read my 31 pages of notes link below, it has a shifter and clutch adjustment section for how I do it. Racer Chris has another method that is different than mine, but is also tried and true. Check that stuff and get back to us. FYI, most tail shifters are really roached and not great for conversion. However, I have everything you need inside and out so you are not totally boned. Really just not optimal, but still workable. |
914bub |
Oct 20 2017, 11:37 PM
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#3
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Member Group: Members Posts: 433 Joined: 16-August 13 From: Modesto CA. Member No.: 16,260 Region Association: None |
Just to be thorough, ground strap in place? If not the cable becomes the ground and erodes/stretches until it breaks. However, your question about shifter adjustment makes me think that there may be your issue. Read my 31 pages of notes link below, it has a shifter and clutch adjustment section for how I do it. Racer Chris has another method that is different than mine, but is also tried and true. Check that stuff and get back to us. FYI, most tail shifters are really roached and not great for conversion. However, I have everything you need inside and out so you are not totally boned. Really just not optimal, but still workable. Ground strap is in place. I have read your notes but it has been a long while since I did. I haven't reread recently and will do so. I've also read Racer Chris' method on the shifter adjustment.I bought 2 sideshift trans from a friend who parted one out of his sons wrecked 73 and one he had out of his 75 that had issues. By issues I mean something was ground up inside but it wasn't first gear.The 75 trans is the one I pulled the first gear and related parts out of. I think all I need to complete my conversion parts list are the brackets and bolts that go at the ends of the engine mount bar. I'll dig my parts out and get a WTB ad placed. Thanks again for all the input. |
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